Extra-Thick Uncoupling Membrane for Superior Movement Accommodation

Schluter DITRA-XL Uncoupling Membrane is engineered to provide enhanced movement accommodation for ceramic tile and natural stone installations. With a thickness of 5/16" (7 mm), DITRA-XL is ideal for projects requiring additional structural performance or smooth transitions to adjacent flooring.

Its open rib, dovetailed cavity structure allows in-plane movement between the substrate and tile covering, significantly reducing stress transfer that can lead to cracking or delamination.

Optimized for Large-Format Tile and Natural Stone

DITRA-XL is especially suited for demanding applications such as large-format tile and dimension stone installations. The increased thickness improves uncoupling performance and provides greater support in assemblies subject to movement.

Recommended for:

• Natural stone tile floors

• Large-format porcelain tile

• Installations over single-layer plywood or OSB

• Joist spacing up to 24" o.c.

This added versatility makes it a strong choice for both remodeling and new construction.

Integrated Waterproofing for Interior Tile Installations

Constructed from durable polyethylene, DITRA-XL functions as a reliable waterproofing membrane in interior environments. It helps protect moisture-sensitive substrates like plywood and OSB from water penetration.

This is particularly important in bathrooms, kitchens, laundry rooms, and other areas where moisture exposure can compromise subfloor integrity.

Advanced Vapor Management to Protect the Tile Assembly

A key feature of DITRA-XL is the free space created by the configured channels on the underside of the membrane. These channels provide a path for excess moisture vapor to escape from the substrate.

By managing vapor beneath the tile covering, DITRA-XL helps:

• Reduce the risk of bond failure

• Prevent moisture-related tile damage

• Promote long-term installation durability

Heavy Load Distribution with Proven Structural Support

The square, cutback cavities form column-like mortar structures when filled during tile installation. These structures transfer loads from the tile surface directly to the substrate.

Because the membrane is virtually incompressible within the tile assembly, DITRA-XL delivers strong point load distribution while preserving uncoupling performance—even in applications exposed to heavy traffic.

Designed for Smooth Floor Transitions and Subfloor Compatibility

At 5/16" (7 mm) thick, DITRA-XL helps create flush transitions between typical 5/16" tile and 3/4" hardwood flooring. This makes it particularly useful when aligning tile surfaces with adjacent wood floors.

DITRA-XL can be installed over:

• Concrete

• Plywood and OSB

• Gypsum underlayments

• Structural plank subfloors

• Radiant heated floors

• Existing vinyl floors

The anchoring fleece bonds securely to the substrate using thin-set mortar, while integrated cutting grooves and air release vents support efficient installation.

Professional Tile Underlayment Built for Performance and Efficiency

Schluter DITRA-XL combines uncoupling, waterproofing, vapor management, and load distribution into a single high-performance membrane. Designed for demanding tile applications and smooth flooring transitions, it provides a durable, reliable foundation for long-lasting ceramic and stone installations.